package cn.shit;

import java.util.*;


public class StackTraceTest {

    public Object show() {
        return new Object();
    }

    public static int factorial(int n) {
        System.out.println("factorial (" + n + "):");
        Throwable t = new Throwable();
        StackTraceElement[] frames = t.getStackTrace();
        for (StackTraceElement f : frames)
            System.out.println(f);
        int r;
        if (n <= 1) r = 1;
        else r = n * factorial(n - 1);
        System.out.println(" return " + r);
        return r;
    }

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        System.out.print("Enter n : ");
        int n = in.nextInt();
        factorial(n);
    }
}

